CN212899635U - Sea wave tooth type speed reducer with input shaft improved fixing structure - Google Patents
Sea wave tooth type speed reducer with input shaft improved fixing structure Download PDFInfo
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- CN212899635U CN212899635U CN202021195227.3U CN202021195227U CN212899635U CN 212899635 U CN212899635 U CN 212899635U CN 202021195227 U CN202021195227 U CN 202021195227U CN 212899635 U CN212899635 U CN 212899635U
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Abstract
The utility model discloses a hypo-gear reducer with an improved fixing structure of an input shaft, which comprises a shell, an input shaft fixing flange, a first pair of tapered roller bearings, an output shaft assembly and a second pair of tapered roller bearings, wherein a hollow cavity is formed inside the shell, the input shaft extends into the hollow cavity from the side, the input shaft fixing flange is fixed on the side surface of the shell, the first pair of tapered roller bearings are installed in the input shaft fixing flange and are sleeved on the periphery of the input shaft, the output shaft assembly is rotatably arranged on the shell and is meshed with the input shaft for transmission, the input shaft axially comprises a bevel pinion structure, a bearing limit ring, a bearing assembling shaft section and an oil seal assembling shaft section in sequence, the tail part of the bearing assembling shaft section is provided with an external thread structure, and the first pair of tapered roller bearings are assembled on the bearing assembling shaft section and are locked and limited in axial position through an anti-slip nut in the external thread structure through threads. The utility model discloses can ensure that the input shaft does not have the axial clearance and can also ensure that the input shaft can rotate smoothly.
Description
[ technical field ] A method for producing a semiconductor device
The utility model relates to a speed reducer technical field especially relates to a hypo-dentate speed reducer with input shaft improvement fixed knot constructs.
[ background of the invention ]
The hypo-gear type speed reducer is widely applied to the gear rack gear drive of a rack for automatically loading and unloading workpieces on a processing machine tool, a small-sized processing fourth shaft or a small-sized processing rotary table and the like, and the hypo-gear type speed reducer needs high-precision positioning during operation and needs to turn to a speed reduction parallel mechanism. In the installation structure of the sea wave tooth input shaft in the prior art, two deep groove ball bearings are installed in the input shaft fixing flange and the axial position of the input shaft is fixed by utilizing the snap spring buckle, and the installation mode influences the working precision of the whole speed reducer.
The sea wave tooth type speed reducer utilizes the function that the contact area of the tooth surface of a spiral bevel gear is large, the contact position of two taper surfaces is different, the gap can be adjusted, and the reduction ratio (1/3-1/30) with a large ratio, the original fixing mode of the input bevel gear shaft is to utilize two deep groove ball bearings and a spring clamping shaft snap ring, the snap ring shaft has a certain gap, the deep groove roller bearings also have a certain axial gap and cannot be pressurized, the pressurizing can cause the unsmooth operation of the bearings, and therefore the generated gap can cause the axial movement of the input bevel gear shaft to influence the precision of the speed reducer.
Therefore, it is necessary to provide a new hypo-gear type speed reducer having an improved fixing structure of the input shaft to solve the above-mentioned problems.
[ Utility model ] content
A primary object of the present invention is to provide a hypo-gear type speed reducer with an improved fixing structure of an input shaft, which can ensure that the input shaft has no axial gap and can also ensure that the input shaft can rotate smoothly.
The utility model discloses a following technical scheme realizes above-mentioned purpose: a sea wave gear type speed reducer with an improved fixing structure of an input shaft comprises a shell, the inner portion of which is provided with a hollow cavity, the input shaft which stretches into the hollow cavity from the side, an input shaft fixing flange which is fixed on the side surface of the shell, a first pair of tapered roller bearings which are arranged in the input shaft fixing flange and are sleeved on the periphery of the input shaft, and an output shaft assembly which is rotatably arranged on the shell and is in meshing transmission with the input shaft, the input shaft axially comprises a bevel pinion structure, a bearing limit ring, a bearing assembling shaft section and an oil seal assembling shaft section in sequence, the tail part of the bearing assembling shaft section is provided with an external thread structure, and the first pair of tapered roller bearings are assembled on the bearing assembling shaft section and are locked and limited in axial position through an anti-slip nut in the external thread structure through threads.
Further, an input shaft oil seal is assembled on the oil seal assembling shaft section.
Further, the other end of the input shaft is provided with an internal thread hole.
Furthermore, the output shaft assembly comprises an output shaft upper fixing flange and an output shaft lower fixing flange which are respectively fixed on the upper surface and the lower surface of the shell, an output shaft which is rotatably erected on the output shaft upper fixing flange and the output shaft lower fixing flange through a second pair of tapered roller bearings, a large output bevel gear which is fixedly sleeved on the output shaft and is meshed with the small bevel gear structure, an output shaft upper oil seal and an output shaft lower oil seal which are arranged on the output shaft at the upper end and the lower end of the output shaft, and an output shaft fixing disc.
Further, the output big bevel gear is positioned in the hollow cavity.
Further, the second pair of tapered roller bearings are respectively installed in the output shaft upper fixing flange and the output shaft lower fixing flange.
Furthermore, the output shaft comprises a gear assembling shaft section fixedly assembled with the large output bevel gear and a bearing assembling shaft section which is positioned at the upper end and the lower end of the gear assembling shaft section and has a diameter smaller than that of the gear assembling shaft section.
Furthermore, a first limiting surface is arranged at the end part of the lower fixing flange of the output shaft, the bottom of the output shaft is supported on the first limiting surface, and the other end of the output shaft is locked and fixed through the output shaft fixing disc.
Furthermore, a second limiting surface for supporting the bottom of the output shaft fixing disc is arranged on a fixing flange on the output shaft, a threaded hole is formed in the surface of the upper end of the output shaft, and the output shaft fixing disc is fixedly connected with the top of the output shaft through a screw.
Compared with the prior art, the utility model discloses hypo-tooth type speed reducer with input shaft improvement fixed knot constructs's beneficial effect lies in: the input shaft is supported and assembled by the tapered roller type bearing, the bearing can bear axial pressure in a limited way without losing the running smoothness of the bearing, the acting surface of the bearing is in line contact, the bearing can bear axial or radial pressure compared with the point contact of the original deep groove ball bearing, and the bearing is locked on the input shaft by matching with a check nut, so that the axial position of the tapered roller bearing is limited, the bearing gap can be adjusted to ensure that the input bevel gear shaft has no axial gap and can also ensure that the bearing runs smoothly, and the action precision and the smoothness of the speed reducer achieve better effects.
[ description of the drawings ]
Fig. 1 is a schematic diagram of an explosive structure according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of an input shaft in an embodiment of the present invention;
fig. 3 is a schematic structural diagram of an output shaft in an embodiment of the present invention;
the figures in the drawings represent:
100 a hypo-gear type speed reducer having an improved fixing structure of an input shaft;
1, a shell; 2, an input shaft, 21 a small bevel gear structure, 22 a bearing limiting ring, 23 a bearing assembling shaft section, 24 an oil seal assembling shaft section and 25 an external thread structure; 3, fixing a flange on the input shaft; 4 a first pair of tapered roller bearings; 5 anti-slip screw cap; 6 inputting the shaft oil seal; 7, fixing a flange on the output shaft, 71 a second limiting surface; 8, an output shaft lower fixing flange and 81 first limiting surfaces; 9. 10 a second pair of tapered roller bearings; 11 output shaft, 111 gear assembling shaft section and 112 bearing assembling shaft section; 12 outputting a big bevel gear; 13 oil seal on the output shaft; 14 output shaft lower oil seal; 15 output shaft fixing disc; 16 hollow cavity.
[ detailed description ] embodiments
Example (b):
referring to fig. 1 to 3, the present embodiment is a hypo-gear type speed reducer 100 with an improved fixing structure of an input shaft, the input shaft assembly comprises a shell 1, a hollow cavity 16 is formed inside the shell 1, an input shaft 2 extends into the hollow cavity 16 from the side, an input shaft fixing flange 3 fixed on the side surface of the shell 1, a first pair of tapered roller bearings 4 fixed in the input shaft fixing flange 3 and sleeved on the periphery of the input shaft 2, an output shaft assembly which is rotatably arranged on the shell 1 and in meshing transmission with the input shaft 2, the input shaft 2 axially sequentially comprises a small bevel gear structure 21, a bearing limiting ring 22, a bearing assembly shaft section 23 and an oil seal assembly shaft section 24, the tail of the bearing assembly shaft section 23 is provided with an external thread structure 25, and the first pair of tapered roller bearings 4 are assembled on the bearing assembly shaft section 23 and are locked and limited in axial position by an anti-skidding nut 5 connected to the external thread structure 25 through threads.
An input shaft oil seal 6 is mounted on the oil seal mounting shaft section 24.
The other end of the input shaft 2 is provided with an internal threaded hole.
The output shaft assembly comprises an output shaft upper fixing flange 7 and an output shaft lower fixing flange 8 which are fixed on the upper surface and the lower surface of the shell 1, an output shaft 11 which is rotatably erected on the output shaft upper fixing flange 7 and the output shaft lower fixing flange 8 through a second pair of tapered roller bearings 9/10, a large output bevel gear 12 which is fixedly sleeved on the output shaft 11 and is meshed with the small bevel gear structure 21, an output shaft upper oil seal 13 and an output shaft lower oil seal 14 which are arranged on the upper end and the lower end of the output shaft 11, and an output shaft fixing disc 15. The output large bevel gear 12 is located within a hollow cavity 16.
The second pair of tapered roller bearings 9/10 are respectively installed in the output shaft upper fixed flange 7 and the output shaft lower fixed flange 8. The output shaft 11 comprises a gear assembling shaft section 111 fixedly assembled with the output large bevel gear 12, and a bearing assembling shaft section 112 which is positioned at the upper end and the lower end of the gear assembling shaft section 111 and has a diameter smaller than that of the gear assembling shaft section 111. The end of the output shaft lower fixing flange 8 is provided with a first limiting surface 81, the bottom of the output shaft 11 is supported on the first limiting surface 81, and the other end of the output shaft lower fixing flange is locked and fixed through the output shaft fixing disc 15. The fixed flange 7 on the output shaft is provided with a second limiting surface 71 for supporting the bottom of the output shaft fixing disc 15, the upper end surface of the output shaft 11 is provided with a threaded hole, and the output shaft fixing disc 15 is fixedly connected with the top of the output shaft 11 through a screw.
The present embodiment has the sea wave tooth type speed reducer 100 of input shaft improvement fixed knot structure to adopt the tapered roller formula bearing to support the assembly input shaft, this kind of bearing can bear axial pressure to the limited extent and not lose its smooth and easy nature of operation, and its working face is the line contact, point contact compared with original deep groove ball bearing can bear axial or radial pressure more, cooperate lock nut locking again on the input shaft, axial position limit die tapered roller bearing, can adjust the bearing clearance and make the entry bevel gear axle not have axial clearance also can make the bearing smoothly operate, thereby make the action precision and the smooth and easy degree of speed reducer reach better effect.
What has been described above are only some embodiments of the invention. For those skilled in the art, without departing from the inventive concept, several modifications and improvements can be made, which are within the scope of the invention.
Claims (9)
1. The utility model provides a sea wave tooth type speed reducer with input shaft improvement fixed knot constructs which characterized in that: it includes that inside is formed with the casing of cavity, stretches into extremely from side input shaft in the cavity, fix the input shaft mounting flange of casing side surface, install in and the cover in the input shaft mounting flange is established the first pair of tapered roller bearing, the rotatable setting of input shaft periphery are in on the casing and with the driven output shaft subassembly of input shaft meshing, the input shaft axial includes bevel pinion structure, bearing spacing ring, bearing assembly shaft section and oil blanket assembly shaft section in proper order, the afterbody of bearing assembly shaft section is provided with an external screw thread structure, the assembly of first pair of tapered roller bearing is in on the bearing assembly shaft section and through a threaded connection the last anti-skidding nut locking of external screw thread structure prescribes a limit to the axial position.
2. The hypo-gear type speed reducer having an improved fixing structure of an input shaft according to claim 1, wherein: and an input shaft oil seal is assembled on the oil seal assembling shaft section.
3. The hypo-gear type speed reducer having an improved fixing structure of an input shaft according to claim 1, wherein: and the other end of the input shaft is provided with an internal threaded hole.
4. The hypo-gear type speed reducer having an improved fixing structure of an input shaft according to claim 1, wherein: the output shaft assembly comprises an output shaft upper fixing flange and an output shaft lower fixing flange which are respectively fixed on the upper surface and the lower surface of the shell, an output shaft which is rotatably erected on the output shaft upper fixing flange and the output shaft lower fixing flange through a second pair of tapered roller bearings, a large output bevel gear which is fixedly sleeved on the output shaft and is meshed with the small bevel gear structure, an output shaft upper oil seal and an output shaft lower oil seal which are arranged on the output shaft at the upper end and the lower end of the output shaft, and an output shaft fixing disc.
5. The hypo-gear type speed reducer with an improved fixing structure of an input shaft according to claim 4, wherein: the large output bevel gear is positioned in the hollow cavity.
6. The hypo-gear type speed reducer with an improved fixing structure of an input shaft according to claim 4, wherein: the second pair of tapered roller bearings are respectively installed on the output shaft in the upper fixing flange and the output shaft in the lower fixing flange.
7. The hypo-gear type speed reducer with an improved fixing structure of an input shaft according to claim 4, wherein: the output shaft comprises a gear assembling shaft section fixedly assembled with the large output bevel gear and a bearing assembling shaft section which is positioned at the upper end and the lower end of the gear assembling shaft section and has a diameter smaller than that of the gear assembling shaft section.
8. The hypo-gear type speed reducer with an improved fixing structure of an input shaft according to claim 4, wherein: the end part of the lower fixing flange of the output shaft is provided with a first limiting surface, the bottom of the output shaft is supported on the first limiting surface, and the other end of the output shaft is locked and fixed through the output shaft fixing disc.
9. The marine wave tooth type speed reducer having an improved fixing structure of an input shaft according to claim 8, wherein: the output shaft fixing device is characterized in that a second limiting surface for supporting the bottom of the output shaft fixing disc is arranged on the fixing flange on the output shaft, a threaded hole is formed in the surface of the upper end of the output shaft, and the output shaft fixing disc is fixedly connected with the top of the output shaft through a screw.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021195227.3U CN212899635U (en) | 2020-06-24 | 2020-06-24 | Sea wave tooth type speed reducer with input shaft improved fixing structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021195227.3U CN212899635U (en) | 2020-06-24 | 2020-06-24 | Sea wave tooth type speed reducer with input shaft improved fixing structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212899635U true CN212899635U (en) | 2021-04-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021195227.3U Active CN212899635U (en) | 2020-06-24 | 2020-06-24 | Sea wave tooth type speed reducer with input shaft improved fixing structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212899635U (en) |
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2020
- 2020-06-24 CN CN202021195227.3U patent/CN212899635U/en active Active
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